Double-drive multi-directional towel embroidery device with 360-degree reversibility and towel embroidery machine

Abstract

The present invention discloses a dual-drive multi-directional towel embroidery device and a towel embroidery machine capable of 360-degree reversal. The multi-directional towel embroidery device includes a swing needle, a swing needle stopper, a swing needle driver, and a reversing driver. When the swing needle stopper is in a fixed state, the swing needle performs reciprocating linear motion on opposite sides and changes its direction of motion after reversal. The swing needle stopper has a fixed state and a reversing state. In the reversing state, the swing needle stopper rotates to reverse direction. The swing needle driver includes a swing needle driver that drives the swing needle to swing back and forth within a set range. A guide structure is provided between the swing needle driver and the swing needle stopper. The guide structure guides the swing needle driver to reciprocate linearly relative to the swing needle stopper, and the guide structure reversals synchronously with the swing needle stopper. The reversing driver is used to drive the swing needle stopper to rotate to reverse direction. The present invention can rotate 360 ​​degrees to any working position to complete the desired design pattern, reducing the difficulty of plate making and increasing the aesthetic appeal of the pattern.

Description

Technical field

[0001] The invention belongs to the technical field of embroidery equipment, and in particular relates to a towel embroidery machine. [Background Technology]

[0002] The main principle of the one-way small towel device currently on the market is that it is hung on one side of the embroidery machine casing. When cooperating with the embroidery machine, the device motor drives the needle to swing left and right under the embroidery machine needle, allowing the embroidery thread to be embroidered on the needle, forming raised thread loops. The embroidery frame runs along the direction of the needle to remove the formed thread loops from the needle. At this time, the raised thread loops are embroidered on the embroidery. The thread loops are similar to the thread loops on towels that people commonly use, so it is called a towel embroidery device.

[0003] The main drawbacks are:

[0004] (1) The one-way small towel device can only work in a single direction along the embroidery frame. However, a complete embroidery pattern basically requires a combination of multiple rows of thread loop protrusions. In order to complete a complete embroidery, the one-way small towel device needs to be raised and stopped after completing the work in one direction. The embroidery machine embroiders a row of embroidery, which is not required for the single needle, and moves it to a position where the device can work. Then the device is lowered to start the next cycle of work. This reduces the output of embroidery and increases the processing cost of customers.

[0005] (2) The one-way small towel device can only complete one thread loop height adjusted during installation. However, with the improvement of people's living standards, the demand for layered and three-dimensional embroidery is getting higher and higher. The one-way small towel can no longer meet the demand for multi-layered towel embroidery.

[0006] Based on this, the applicant designed a towel embroidery device that can work in multiple directions. For details, please refer to the Chinese invention patent with publication number 113604994A, which discloses a small towel embroidery device and embroidery machine that can work in multiple directions. The small towel embroidery device includes: a base plate, and a thread inlet is provided at the front end of the base plate; two thread hookers, which slide back and forth on the base plate to alternately hook the thread, and the thread hookers feed the hooked embroidery thread into the thread inlet to form a thread loop; a thread hooking drive assembly, which drives the two thread hookers to alternately hook the thread; an opening mechanism, which includes a latch and a fastener, and the latch slides back and forth on the base plate to open or close the thread inlet. When the embroidery thread enters the thread inlet, the latch opens the thread inlet. After the embroidery thread enters the thread inlet to form a thread loop, the latch closes the thread inlet, and the fastener locks the latch when the latch closes the thread inlet.

[0007] In addition, with reference to the Chinese utility model patent with authorization announcement number CN218666657U, a towel embroidery raising device and a towel embroidery machine are disclosed, wherein the towel embroidery raising device includes a translation assembly, and the translation assembly includes: a needle plate, the needle plate is provided with an X-direction needle extending along the X direction and a Y-direction needle extending along the Y direction; an X-direction drive mechanism, the X-direction drive mechanism is used to drive the needle plate to move along the X direction; and a Y-direction drive mechanism, the Y-direction drive mechanism is used to drive the needle plate to move along the Y direction. After completing the raising work in one direction, the needle plate is driven by the X-direction drive mechanism and the Y-direction drive mechanism to move in the corresponding direction, so that the needle in one direction moves to the working area or leaves the working area. The above technical solution requires the replacement of the working needle for reversing, and can only perform reversing between the X direction and the Y direction. It is not a true 360-degree direction, which limits the freedom of plate making and cannot embroider more patterns. [Summary of the invention]

[0008] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a dual-drive multi-directional towel embroidery device and a towel embroidery machine that can be reversible 360 ​​degrees.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0010] In one aspect, the present invention provides a dual-drive multi-directional towel embroidery device capable of 360-degree reversal, comprising:

[0011] A looping head fixing seat, wherein the looping head fixing seat is provided with a guide sleeve;

[0012] A swing needle, which moves back and forth linearly on two opposite sides when the swing needle limiter is in a fixed state, and changes the direction of movement after reversing;

[0013] The swing needle limiter has a fixed state and a reversing state. In the reversing state, the swing needle limiter rotates to reverse. The swing needle limiter is provided on the guide sleeve and rotates around the guide sleeve.

[0014] A pendulum needle driver is provided with a pendulum needle driving member that drives the pendulum needle to swing back and forth within a set range. A guide structure is provided between the pendulum needle driving member and the pendulum needle limiter. The guide structure guides the pendulum needle driving member to move back and forth linearly relative to the pendulum needle limiter. The guide structure changes direction synchronously with the pendulum needle limiter.

[0015] The reversing driver is used to drive the swing needle limiter to rotate and perform reversing.

[0016] Preferably, the pendulum needle driving component includes a pendulum needle guide block connected to the pendulum needle, and the pendulum needle limiting component is provided with a pendulum needle guide groove that cooperates with the pendulum needle guide block to form a guide structure, and the pendulum needle guide block moves back and forth in a straight line along the pendulum needle guide groove.

[0017] Preferably, the pendulum drive component further includes a pendulum drive pin connected to the pendulum guide block and a rotating component that drives the pendulum drive pin to move back and forth linearly, and the eccentric portion of the rotating component is connected to the pendulum drive pin.

[0018] Preferably, the rotating component is provided with a driving groove at a position deviating from the center, and the upper end of the swing needle driving pin is arranged in the driving groove.

[0019] Preferably, the pendulum drive also includes a first drive motor and a first transmission assembly arranged between the first drive motor and the rotating part; the reversing drive includes a second drive motor and a second transmission assembly arranged between the second drive motor and the pendulum limiter, and the first drive motor and the second drive motor are both arranged horizontally.

[0020] Preferably, the first transmission assembly includes a first synchronous pulley, a second synchronous pulley, and a first synchronous belt connecting the first synchronous pulley and the second synchronous pulley. The first synchronous pulley is provided on the rotating component, and the first drive motor drives the second synchronous pulley to rotate.

[0021] Preferably, the first transmission assembly further comprises a bevel gear 1 mounted on the output shaft of the first drive motor and a bevel gear 2 mounted on the pulley shaft of the second synchronous pulley, and the bevel gear 1 and the bevel gear 2 are meshed for transmission.

[0022] Preferably, the second transmission assembly includes a third synchronous pulley, a fourth synchronous pulley, and a second synchronous belt connecting the third synchronous pulley and the fourth synchronous pulley, the third synchronous pulley is arranged on the swing needle limiter, and the second drive motor drives the fourth synchronous pulley to rotate.

[0023] Preferably, the second transmission assembly further includes a bevel gear three mounted on the output shaft of the second drive motor and a bevel gear four mounted on the pulley shaft of the fourth synchronous pulley, and the bevel gear three and the bevel gear four are meshed for transmission.

[0024] On the other hand, the present invention provides a towel embroidery machine, including an embroidery machine head and an embroidery frame, the embroidery machine head is provided with an embroidery needle driving structure and the dual-drive multi-directional towel embroidery device, the embroidery needle driving structure is provided with an embroidery needle, the swing needle is perpendicular to the embroidery needle, and makes reciprocating linear movements on opposite sides of the embroidery needle.

[0025] The technical solution adopted by the present invention has the following beneficial effects:

[0026] The embroidery needle moves up and down on the embroidery work to embroider. During this process, the pendulum needle is driven by the pendulum needle driver to move back and forth on the opposite sides of the embroidery needle to form a thread loop. This repeated operation will form multiple thread loops on the pendulum needle. Since the embroidery frame runs along the thread-off direction of the pendulum needle, the previously formed thread loop will be removed from the pendulum needle, leaving an upright thread loop on the embroidery work.

[0027] The reversing driver rotates the pendulum needle stopper to reverse direction. A guide structure is provided between the pendulum needle driver and the pendulum needle stopper, guiding the pendulum needle driver in reciprocating linear motion relative to the pendulum needle stopper. The guide structure also reversals synchronously with the pendulum needle stopper, causing the pendulum needle to change direction after reversing. Furthermore, the pendulum needle stopper can rotate in any direction, with no rotation angle restrictions, thus enabling reversal in any 360-degree working position. Since the reversing driver is inactive when the pendulum needle stopper is fixed, the stationary reversing driver limits the pendulum needle stopper, allowing the pendulum needle stopper to remain relatively fixed, ensuring stable movement after reversing the pendulum needle in any direction.

[0028] Since it can rotate 360 ​​degrees to any working position to complete the desired pattern, it improves the work efficiency of the product, reduces the difficulty of pattern making, saves embroidery thread and auxiliary materials, increases the beauty of the pattern, and increases customer benefits.

[0029] Since the swing needle moves horizontally back and forth in a straight line, compared with the crank-shaped swing needle in the prior art that swings in an arc, the cooperation with the embroidery thread is more stable and reliable, and the quality of the embroidery product is also better.

[0030] The first drive motor and the second drive motor are both set horizontally, not vertically. This is because if they are set vertically, the height is relatively high. The main parts of the multi-directional towel embroidery device (except for the retractable cylinder part located on the lower side of the beam) are all located on the side of the machine head. The first drive motor and the second drive motor are the highest. The machine head main shaft passes through the side of the machine head, and other components may also be installed. Therefore, the space is extremely limited. By reducing the spatial height of the first drive motor and the second drive motor, interference with other components can be avoided.

[0031] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0032] The invention will be further described below with reference to the accompanying drawings:

[0033] Figure 1 This is a schematic structural diagram of a multi-directional towel embroidery device in Example 1 of the present invention;

[0034] Figure 2This is a schematic diagram of the partial structure of an embroidery machine using the multi-directional towel embroidery device according to the first embodiment of the present invention;

[0035] Figure 3 This is a side view of the multi-directional towel embroidery device in Example 1 of the present invention;

[0036] Figure 4 This is a partially exploded perspective diagram of a multi-directional towel embroidery device in Example 1 of the present invention;

[0037] Figure 5 This is a partially exploded side view of the multi-directional towel embroidery device in Example 1 of the present invention;

[0038] Figure 6 for Figure 5 The enlarged structural diagram at position I in the middle;

[0039] Figure 7 Schematic diagram of the coordination between the swing needle driver and the swing needle limiting member in the first embodiment;

[0040] Figure 8 Schematic diagram of the cooperation between the swing needle driving pin, the swing needle guide block and the swing needle in Example 1;

[0041] Figure 9 This is a top view of the multi-directional towel embroidery device in Example 1 of the present invention;

[0042] Figure 10 for Figure 9 Middle CC section view;

[0043] Figure 11 for Figure 10 The enlarged structural diagram at position I in the middle;

[0044] Figure 12 Schematic diagram of the relative direction of the pendulum needle in Example 1;

[0045] Figure 13 This is a schematic diagram of the second relative direction of the pendulum needle in Example 1;

[0046] Figure 14 Schematic diagram of the relative direction of the pendulum needle in the first embodiment;

[0047] Figure 15 Schematic diagram of the relative direction of the pendulum needle in Example 1;

[0048] Figure 16 This is a schematic structural diagram of a multi-directional towel embroidery device in a second embodiment of the present invention;

[0049] Figure 17 This is a partially exploded perspective diagram of a multi-directional towel embroidery device in a second embodiment of the present invention;

[0050] Figure 18This is a partial cross-sectional schematic diagram of a multi-directional towel embroidery device in the second embodiment of the present invention;

[0051] Figure 19 This is a structural diagram of the reversing mechanism in the second embodiment when it is located in the working area;

[0052] Figure 20 This is a structural diagram of the reversing mechanism in the second embodiment when it is located in the standby area;

[0053] Figure 21 Schematic diagram of the swing needle moving back and forth along the X direction on both sides of the embroidery needle in Example 2 Figure 1 ;

[0054] Figure 22 Schematic diagram of the swing needle moving back and forth along the X direction on both sides of the embroidery needle in Example 2 Figure 2 ;

[0055] Figure 23 Schematic diagram of the second embodiment in which the oscillating needle moves back and forth along a straight line at a certain angle to the X direction on both sides of the embroidery needle;

[0056] 1141, limiting groove 1142, one-way self-locking component 1143, torsion spring 1144, first synchronous belt transmission assembly 115, first synchronous pulley 1151, eccentric protrusion 11511, driving groove 11512, second synchronous pulley 1152, first Synchronous belt 1153, bevel gear two 1154, pendulum needle drive pin 116, pendulum needle guide block 1161, pendulum needle 117, second transmission assembly 118, third synchronous pulley 1181, fourth synchronous belt 1182, second synchronous belt 1183, bevel gear four 1184, bearing three 1185, presser foot 119, presser foot spring 1191; drive assembly 12, first drive motor 121, bevel gear one 122, motor fixing bracket 123, retractable bracket 13; second drive motor 14, bevel gear three 141; retractable mechanism 2, retractable cylinder 21, translation guide rail 22, curved guide rail seat 23, guide bearing 231, guide seat 24, curved guide rail groove 241, vertical guide rail 25, mounting bracket 3. [Specific implementation method]

[0057] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0058] Those skilled in the art will appreciate that, unless there is any conflict, the features in the following embodiments and implementations may be combined with each other.

[0059] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. For example, terms such as "upper," "lower," "X-axis," and "Y-axis" used below to indicate orientation or positional relationships are based solely on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the disclosure. They do not indicate or imply that the device or component referred to must have a specific orientation or be constructed or operated in a specific orientation, and therefore should not be construed as limiting the disclosure.

[0060] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0061] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0062] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0063] Example 1

[0064] Aiming at the shortcoming that most towel embroidery devices on the market can only work in one direction, the present invention designs a multi-directional towel embroidery device which can work in any direction of 360 degrees. Figures 1 to 15 As shown, the multi-directional towel embroidery device is mounted on the embroidery machine head 200, that is, on the head housing, and cooperates with the embroidery needle 201 on the needle bar frame to perform towel embroidery. When the head color changes, the needle bar frame moves laterally relative to the head housing, moving the embroidery needle 201 of the corresponding color to the position corresponding to the multi-directional towel embroidery device. For a single-head embroidery machine, a single head is sufficient. For a multi-head embroidery machine, several heads are mounted side by side on the machine frame, specifically on the crossbar 300 of the frame. In addition, an embroidery frame and needle plate 100 are installed below the crossbar. The embroidery frame can move horizontally in the X and Y directions. The needle plate 100 is equipped with a needle hole 101 that cooperates with the embroidery needle 201. During embroidery, the embroidery needle 201 passes through the needle hole 101 and interacts with the fabric on the embroidery frame to perform embroidery.

[0065] like Figures 1 to 15 As shown, the multi-directional towel embroidery device includes a mounting bracket 3 and a retracting mechanism 2 and a reversing mechanism 1 mounted on the mounting bracket 3 .

[0066] The reversing mechanism 1 includes a looping head assembly 11 and a driving assembly 12. The looping head assembly 11 includes a looping head fixing seat 111 and a swing needle 117, a reversing fixing ring 113, and a swing needle limiter 114 provided on the looping head fixing seat 111.

[0067] The pendulum needle 117 moves back and forth linearly on opposite sides of the embroidery needle 201 and changes its direction of movement after reversing. Since the pendulum needle 117 moves horizontally and reciprocatingly, compared with the crank-shaped pendulum needle in the prior art that swings in an arc, it cooperates more stably and reliably with the embroidery thread, and the embroidery product quality is also better.

[0068] The reversing fixed ring 113 is provided with a reversing self-locking ring surface 1131. The swing needle stopper 114 is provided with two one-way self-locking components 1143 that cooperate with the reversing self-locking ring surface 1131 for self-locking, and the self-locking directions of the two one-way self-locking components 1143 are opposite. The swing needle stopper 114 has a fixed state and a reversing state. In the fixed state, the swing needle stopper 114 is fixed relative to the reversing fixed ring 113. In the reversing state, the swing needle stopper 114 rotates relative to the center of the reversing fixed ring 113 to reverse direction. In this way, after one of the one-way self-locking components 1143 is unlocked, the swing needle stopper 114 can rotate in the unlocked direction, and the other one-way self-locking component 1143 will not hinder the rotation of the swing needle stopper 114.

[0069] The looping head assembly 11 further includes a swing needle driving component and a reversing unlocking component. The swing needle driving component is combined with the driving assembly 12 to form a swing needle driver.

[0070] The swing needle limiter 114 is provided with a limit slot 1142, which has limit ends on opposite sides of the limit slot 1142. Since the length of the limit slot 1142 corresponds to, or is slightly larger than, the swing needle's swing amplitude during normal towel embroidery, when the swing needle limiter 114 is in a fixed state and towel embroidery is performed normally, the swing needle driver moves along the limit slot between the limit ends on both sides, driving the swing needle to swing back and forth within a set range, without interacting with the limit ends on opposite sides of the limit slot 1142. Because the aforementioned self-locking structure is provided between the swing needle limiter 114 and the reversing fixed ring 113, the swing needle limiter 114 can remain relatively fixed after reversing, ensuring stable movement of the swing needle 117 after reversing. When the swing needle limiter switches from the fixed state to the reversing state, the reversing unlocking member drives one of the one-way self-locking components to unlock the reversing self-locking ring surface. After unlocking is completed, the pendulum needle driving member continues to move and reverses, and the pendulum needle driving member acts on one of the limiting ends of the limiting groove during reversing, driving the pendulum needle limiting member to rotate relative to the center of the reversing fixed ring to reverse.

[0071] Furthermore, the swing needle drive member includes a swing needle drive pin 116 and a rotating member. The swing needle drive pin 116 vertically passes through the limit slot 1142 and moves along the limit slot. The rotating member is used to drive the swing needle drive pin 116 to swing back and forth along the limit slot 1142, and to drive the swing needle limit member 114 to rotate during reversal. In other words, the rotation of the rotating member is converted into the reciprocating linear swing of the swing needle drive pin 116.

[0072] In this embodiment, the reversing fixed ring 113 is an internal tooth ratchet, the reversing self-locking ring surface 1131 is the inner gear ring of the internal tooth ratchet, and the one-way self-locking component 1143 is a ratchet that cooperates with the inner gear ring. The ratchet is rotatably connected to the pendulum needle limiter, and a torsion spring 1144 is provided between the ratchet and the pendulum needle limiter. Under the action of the torsion spring 1144, the ratchet rotates unidirectionally and engages with the inner gear ring. When unlocking, the ratchet overcomes the action of the torsion spring and rotates in the opposite direction to achieve unlocking. In the above technical solution, the two one-way ratchets cooperate with the internal tooth ratchet to realize the bidirectional rotation of the pendulum needle limiter 114 while having a self-locking function, and the pendulum needle limiter can rotate 180 degrees in both directions, thereby realizing reversal of any working position of 360 degrees.

[0073] Furthermore, a guide sleeve 112 is provided on the looping head fixed seat 111, and the pendulum needle limiter 114 rotates with the guide sleeve 112 as the central axis. Specifically, it can be fixed to the guide sleeve and rotate synchronously with the guide sleeve. The rotating component rotates concentrically with the pendulum needle limiter 114 along the guide sleeve 112. The rotating component is provided with a drive groove 11512 at a position off-center, and the upper end of the pendulum needle drive pin 116 is located in the drive groove. A bearing 1121 is provided between the guide sleeve 112 and the looping head fixed seat 111, and the guide sleeve 112 can rotate relative to the looping head fixed seat 111. In order to ensure smooth rotation of the rotating component, a bearing 2 1122 is provided between the rotating component and the guide sleeve 112, and the rotating component rotates relative to the guide sleeve 112.

[0074] The pendulum pin 117 is connected to a pendulum guide block 1161. The pendulum drive pin 116 vertically passes through the limit slot 1142 and is connected to the pendulum guide block. The pendulum stopper 114 is provided with a pendulum guide slot 1141 that cooperates with the pendulum guide block 1161. The pendulum guide block 1161 reciprocates along the pendulum guide slot 1141. In this way, through the cooperation between the drive slot 11512 and the pendulum drive pin 116, and the guidance of the pendulum guide slot 1141 on the pendulum guide block 1161, the rotational motion of the rotating component can be converted into the reciprocating linear swing of the pendulum pin 117. Compared with the prior art method of driving a crank-shaped pendulum pin to swing in an arc, the transmission is more stable and reliable.

[0075] Specifically, the cross section of the pendulum guide block 1161 includes upper and lower parallel straight sides and left and right curved sides connecting the two straight sides. The shape of the pendulum guide groove 1141 corresponds to the cross section of the pendulum guide block 1161.

[0076] In order to realize that the pendulum needle driving pin 116 passes through the pendulum needle guide groove and is connected to the pendulum needle guide block, the limiting groove 1142 crosses and penetrates the pendulum needle guide groove 1141. The pendulum needle limiting member 14 is provided with a radial protrusion, and the pendulum needle guide groove 1141 penetrates the opposite sides of the radial protrusion. The pendulum needle guide block 1161 is provided with two unlocking drive surfaces corresponding to the opposite sides of the moving direction that act on the one-way self-locking component. The unlocking drive surfaces pass through the through-opening of the pendulum needle guide groove and act on the one-way self-locking component. It can be understood that before the pendulum needle driving pin 116 acts on the limiting ends on the opposite sides of the limiting groove 1142, the unlocking drive surfaces have already passed through the through-opening of the pendulum needle guide groove and acted on the one-way self-locking component. In this way, it can be ensured that the lock is unlocked first, and then the pendulum needle limiting member is driven to rotate for reversing.

[0077] Due to space limitations, it is not feasible to integrate a motor on the looping head fixed seat 111 to directly drive the rotating component. Based on this, in this embodiment, the looping head fixed seat 111 is provided with a first synchronous belt transmission assembly 115, which includes a first synchronous belt transmission assembly 115, a second synchronous belt transmission assembly 115, and a first synchronous belt 1153 connected to the first and second synchronous belt pulleys for transmission. The rotating component is the first synchronous belt pulley 1151, and the drive groove 11512 is provided at the bottom of the first synchronous belt pulley. Specifically, the bottom of the first synchronous belt pulley 1151 is provided with an eccentric protrusion 11511 in a circumferential portion that deviates from the center position, and the drive groove 11512 is provided on the eccentric protrusion 11511. In this way, the drive assembly 12 can be provided on the outside of the looping head fixed seat 111 to drive the second synchronous belt pulley 1152. The use of a synchronous belt drive assembly for transmission not only provides smooth transmission but also high transmission accuracy. The direct use of the first synchronous pulley as the rotating component and the provision of a drive groove at its bottom have the advantages of simplifying the structure and reducing the number of parts. It is understood that the first synchronous belt drive assembly 115 can also be replaced by a gear drive, a rack and pinion drive, or the like.

[0078] Specifically, such as Figure 1 As shown, the drive assembly 12 includes a motor mounting bracket 123, a first drive motor 121, and a bevel gear 122 mounted on the output shaft of the drive motor. The first drive motor 121 is mounted on the motor mounting bracket 123. The second synchronous pulley 1152 is provided with a pulley shaft 2, on which a bevel gear 2 1154 is mounted. The bevel gear 122 and the bevel gear 2 1154 are meshed and driven. The pulley shaft 2 is rotatably supported on the looping head fixing seat 111 by a bearing 3. The bevel gear 2 1154 and the pulley shaft 2 can be arranged as a whole or separately and fixed together. The bevel gear 1 122 between the first drive motor 121 and the rotating component and the first synchronous belt transmission assembly 115 constitute the first transmission assembly.

[0079] It is understandable that the first transmission assembly can be replaced by other common transmission mechanisms, such as gear transmission, worm gear transmission, or a combination of multiple transmission mechanisms.

[0080] The operating principle of the reversing mechanism in this embodiment is as follows: the first drive motor 121 drives bevel gear 122 to rotate, which then meshes with bevel gear 2 1154, which in turn drives the first synchronous belt drive assembly 115, thereby rotating the first synchronous pulley 1151. The drive groove 11512 on the first synchronous pulley engages with the swing needle drive pin 116. Because the swing needle guide block 1161 cooperates with the swing needle guide groove 1141 on the swing needle stopper, the swing needle drive pin 116 drives the swing needle 117 to move back and forth linearly on opposite sides of the embroidery needle.

[0081] like Figure 11 、 Figure 12 and Figure 15 As shown, the swing needle 117 moves back and forth along the X direction on the opposite sides of the embroidery needle 201, as shown in FIG. Figure 14 As shown, the swing needle 117 moves back and forth in the Y direction on opposite sides of the embroidery needle 201. Of course, this embodiment can work in any direction of 360 degrees, and is not limited to moving back and forth in the X / Y direction. It can also move back and forth in any direction that has an angle with the X / Y direction.

[0082] When working in a certain direction of 360 degrees, due to the design of the rotation angle of the first drive motor 121, the pendulum needle guide block 1161 moves in the space between the two one-way self-locking components 1143, and the pendulum needle limiter 114 is fixed, so the pendulum needle swings back and forth in a fixed direction under the embroidery needle to form a towel thread loop. As the embroidery machine frame moves, the thread loop will detach from one end of the pendulum needle, leaving towel thread loops on the fabric.

[0083] When the embroidery plate design requires the pendulum needle 117 to work in other directions of the embroidery frame, the first drive motor 121 only needs to increase the swing amplitude in a certain rotation direction and open one of the two one-way self-locking components 1143. The entire pendulum needle mechanism (the pendulum needle and the pendulum needle guide block, pendulum needle drive pin, and pendulum needle limiter connected to the pendulum needle) can rotate freely to the required direction to work, thereby completing the required design pattern.

[0084] Specifically, the looping head fixed seat 111 includes a looping head upper fixed seat 1112 and a looping head lower fixed seat 1111. The looping head fixed seat 1112 is provided with an upper opening, and the guide sleeve 112 penetrates into the looping head fixed seat from the upper opening. The looping head lower fixed seat 1111 is provided with a lower opening, and the swing pin 117 passes through the lower opening. The rear portion of the swing pin is provided with a fixed portion, which is a rectangular structure, parallel to the main body of the swing pin front portion and higher than the swing pin front portion. A vertical connecting portion is provided in the middle of the swing pin, which vertically passes through the lower opening, is connected to the fixed portion at the upper end, and is connected to the front end at the lower end. The bottom surface of the swing pin guide block 1161 is provided with a fixing groove, and the fixing portion is partially located in the fixing groove and can be fixed with screws. The screws can also pass upward through the swing pin guide block and are fixed to the swing pin drive pin 116 above by screws. In addition, a limiting annular surface is provided on the periphery of the lower opening, which is used to form a limit with the lower end of the guide sleeve. A bearing positioning step is provided on the outer side of the upper opening, and bearing one is installed on the bearing positioning step. A limiting flange is provided on the upper end of the guide sleeve, which cooperates with the end face of bearing one to limit the position.

[0085] In order to install the presser foot, a presser foot 1191 and a presser foot spring 1191 are provided in the guide sleeve 112. The center of the presser foot is hollow, so the embroidery needle can pass through the loop head fixed seat 111, i.e. the guide sleeve 112 and the presser foot 1191, and cooperate with the swing needle 117 below.

[0086] like Figures 1 to 3 As shown, the retracting mechanism 2 is used to send the reversing mechanism 1 to the working area or return it to the standby area. When towel embroidery is required, the retracting mechanism 2 sends the reversing mechanism 1 to the working area. When normal flat embroidery is performed, the retracting mechanism 2 returns the reversing mechanism 11 to the standby area.

[0087] Specifically, the retractable mechanism 2 is provided with a translation guide rail 22 for guiding the reversing mechanism's forward and backward movement, a lifting guide rail for guiding the reversing mechanism's upward and downward movement, and a retractable actuator for driving the reversing mechanism's movement. The lifting guide rail comprises a vertical guide rail 25, a curved guide rail seat 24, a curved guide rail groove 241 disposed on the curved guide rail seat 24, and a guide seat 23. The translation guide rail 22 and the curved guide rail seat 24 are fixed to the mounting bracket 3. The reversing mechanism 1 is provided with a retractable bracket 13, which comprises a translation bracket and a lifting bracket. The translation bracket slides with the translation guide rail, the vertical guide rail is disposed on the translation bracket, and the lifting bracket is connected to the guide seat and slides with the vertical guide rail. The guide seat is provided with a guide portion that engages with the curved guide rail groove. The curved guide rail groove comprises a horizontal section and a curved climbing section connected to the horizontal section. The guide seat 23 is provided with a guide shaft, on which a guide bearing 231 is provided that engages with the curved guide rail groove.

[0088] The retracting and extending drive is a retracting and extending cylinder 21. When the retracting and extending drive drives the reversing mechanism to move forward and backward along the translation guide rail, the vertical guide rail is driven to move synchronously, and the guide bearing slides along the curved guide rail groove. In the horizontal section, the retracting and extending mechanism moves horizontally backward, and then guided by the curved climbing section, the guide seat drives the lifting bracket to move up and down along the vertical guide rail. When the multi-directional towel embroidery device needs to work, Figure 2 and Figure 3 As shown, the reversing mechanism 1 is sent to the working area by the retracting mechanism 2 to work with the embroidery needle of the embroidery machine. After the work is completed, the reversing mechanism 1 is retracted to the back side of the needle bar frame to make room for changing the fabric.

[0089] Due to the provision of translation guide rails, vertical guide rails and curved guide rails, when the retracting and releasing cylinder drive device moves forward and backward, it will be guided along the wave crest design of the curved guide rail, moving out of the translation and lifting bands, thereby avoiding space limitations, so that the device can work under any needle bar (after the retracting mechanism 2 returns the reversing mechanism 1 to the standby area, the machine head can change color), thereby achieving the purpose of multi-color operation.

[0090] Example 2

[0091] refer to Figures 16 to 23Compared to the first embodiment, this embodiment incorporates a reversing drive, meaning two drives are simultaneously provided: a swing needle drive and a reversing drive. This can be called a dual-drive multi-directional towel embroidery device. The swing needle drive drives the swing needle in reciprocating linear motion, while the reversing drive drives the swing needle stopper to rotate and reverse direction. This eliminates the need for a reversing retaining ring or a self-locking mechanism between the swing needle stopper and the reversing retaining ring.

[0092] The reversing drive includes a second drive motor 14 and a second transmission assembly 118 disposed between the second drive motor and the swing needle stopper. The second drive motor 14, like the first drive motor 121, is mounted on a motor mounting bracket and is disposed side by side with the first drive motor.

[0093] Specifically, the second transmission assembly 118 includes a third synchronous pulley 1181, a fourth synchronous pulley 1182, and a second synchronous belt 1183 connecting the third synchronous pulley and the fourth synchronous pulley. The third synchronous pulley 1181 is arranged on the swing needle limiter 14, and the second drive motor 14 drives the fourth synchronous pulley 1182 to rotate.

[0094] It is understandable that the third synchronous pulley 1181 and the swing needle limiting member 14 can be provided as one piece, or can be connected together in separate parts.

[0095] Furthermore, the first drive motor 121, like the second drive motor 14, is axially arranged horizontally, rather than vertically. This is because if it is arranged vertically, the height is relatively high. The main parts of the multi-directional towel embroidery device (except for the retractable cylinder part located on the lower side of the beam) are all located on the side of the machine head. The first drive motor 121 and the second drive motor 14 are the highest. The machine head side passes through the machine head main shaft, and other components may also be set. Therefore, the space is extremely limited. By reducing the spatial height of the first drive motor 121 and the second drive motor 14, interference with other components can be avoided. Since the pulley shaft is perpendicular to the output shaft of the first drive motor 121 and the second drive motor 14, the first drive motor 121 and the second drive motor 14 cannot directly drive the pulley shaft. The second transmission assembly 118 also includes a bevel gear three 141 installed on the output shaft of the second drive motor and a bevel gear four 1184 installed on the pulley shaft of the fourth synchronous pulley. The bevel gear three and the bevel gear four are meshed for transmission.

[0096] It is understandable that the second transmission assembly 118 can be replaced by other common transmission mechanisms, such as gear transmission, worm gear transmission, or a combination of multiple transmission mechanisms.

[0097] like Figure 21 and Figure 22As shown, before the reversal, the pendulum needle driver drives the pendulum needle 117 to make a reciprocating linear movement along the X direction on both sides of the embroidery needle 201. When the embroidery plate design requires the pendulum needle to work in the other direction of the embroidery frame, the second drive motor 14 drives the second transmission assembly 118 to drive the entire pendulum needle mechanism to rotate to any other required working direction, such as Figure 23 The direction shown is at a certain angle to the X direction, and then the pendulum needle driver drives the pendulum needle to move back and forth in a straight line to complete the design required.

[0098] Since the swing needle limiter is in a fixed state, the reversing driver does not work. The swing needle limiter is limited by the stationary reversing driver, so that the swing needle limiter can remain relatively fixed, ensuring stable movement of the swing needle after reversing in any direction.

[0099] In addition, a bearing 3 1185 is provided between the pulley shaft of the fourth synchronous pulley and the lower fixed seat 1111 of the looping head, and a sealing plate 1113 is connected to the bottom of the lower fixed seat 1111 of the looping head.

[0100] Same as the first embodiment, Figure 19 and Figure 20 As shown, when towel embroidery is required, the retracting mechanism 2 sends the reversing mechanism 1 to the working area. During normal flat embroidery, the retracting mechanism 2 returns the reversing mechanism 1 to the standby area.

[0101] The above description is merely a specific embodiment of the invention, but the scope of protection of the invention is not limited thereto. Those skilled in the art will understand that the invention includes, but is not limited to, the drawings and the contents described in the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the invention are intended to be included within the scope of the claims.

Claims

1. The dual-drive multi-directional towel embroidery device can be reversible 360 ​​degrees, characterized by: include: A looping head fixing seat, wherein the looping head fixing seat is provided with a guide sleeve; A swing needle, which moves back and forth linearly on two opposite sides when the swing needle limiter is in a fixed state, and changes the direction of movement after reversing; The swing needle limiter has a fixed state and a reversing state. In the reversing state, the swing needle limiter rotates to reverse. The swing needle limiter is provided on the guide sleeve and rotates with the guide sleeve as the central axis. A pendulum needle driver is provided with a pendulum needle driving member that drives the pendulum needle to swing back and forth within a set range. A guide structure is provided between the pendulum needle driving member and the pendulum needle limiter. The guide structure guides the pendulum needle driving member to move back and forth linearly relative to the pendulum needle limiter. The guide structure changes direction synchronously with the pendulum needle limiter. A reversing driver, which is used to drive the swing needle limiter to rotate and perform reversing; The dual-drive multi-directional towel embroidery device also includes a reversing fixing ring, the reversing fixing ring is provided with a reversing self-locking ring surface, the swing needle limiter is provided with two one-way self-locking components that cooperate with the reversing self-locking ring surface for self-locking, and the self-locking directions of the two one-way self-locking components are opposite, and the swing needle limiter is provided with a limiting groove, and the limiting groove is provided with limiting ends on opposite sides; a reversing unlocking component is also provided, when the swing needle limiter is in a fixed state, the swing needle driving component moves along the limiting groove between the limiting ends on both sides, and drives the swing needle to swing back and forth within a set range; the reversing unlocking component drives one of the one-way self-locking components to unlock the reversing self-locking ring surface when the swing needle limiter is converted from a fixed state to a reversing state; the swing needle driving component acts on one of the limiting ends of the limiting groove during reversing, and drives the swing needle limiting component to rotate relative to the center of the reversing fixing ring to achieve reversal.

2. The dual-drive multi-directional towel embroidery device capable of 360-degree reversal according to claim 1 is characterized in that: The swing needle driving component includes a swing needle guide block connected to the swing needle, and the swing needle limiting component is provided with a swing needle guide groove that cooperates with the swing needle guide block to form a guide structure. The swing needle guide block moves back and forth linearly along the swing needle guide groove.

3. The dual-drive multi-directional towel embroidery device capable of 360-degree reversal according to claim 2, characterized in that: The swing needle driving member further includes a swing needle driving pin connected to the swing needle guide block and a rotating component that drives the swing needle driving pin to move back and forth linearly, and the eccentric part of the rotating component is connected to the swing needle driving pin.

4. The dual-drive multi-directional towel embroidery device capable of 360-degree reversal according to claim 3 is characterized in that: The rotating component is provided with a driving groove at a position deviating from the center, and the upper end of the swing needle driving pin is arranged in the driving groove.

5. The dual-drive multi-directional towel embroidery device capable of 360-degree reversal according to claim 3, characterized in that: The pendulum drive also includes a first drive motor and a first transmission assembly arranged between the first drive motor and the rotating component; the reversing drive includes a second drive motor and a second transmission assembly arranged between the second drive motor and the pendulum limiter, and the first drive motor and the second drive motor are both arranged horizontally.

6. The dual-drive multi-directional towel embroidery device capable of 360-degree reversal according to claim 5, characterized in that: The first transmission assembly includes a first synchronous pulley, a second synchronous pulley, and a first synchronous belt connecting the first synchronous pulley and the second synchronous pulley. The first synchronous pulley is arranged on a rotating component, and the first drive motor drives the second synchronous pulley to rotate.

7. The dual-drive multi-directional towel embroidery device capable of 360-degree reversal according to claim 6, characterized in that: The first transmission assembly further includes a bevel gear 1 mounted on the output shaft of the first drive motor and a bevel gear 2 mounted on the pulley shaft of the second synchronous pulley, wherein the bevel gear 1 and the bevel gear 2 are meshed for transmission.

8. The dual-drive multi-directional towel embroidery device capable of 360-degree reversal according to claim 5, characterized in that: The second transmission assembly includes a third synchronous pulley, a fourth synchronous pulley, and a second synchronous belt connecting the third synchronous pulley and the fourth synchronous pulley. The third synchronous pulley is arranged on the swing needle limiter, and the second drive motor drives the fourth synchronous pulley to rotate.

9. The dual-drive multi-directional towel embroidery device capable of 360-degree reversal according to claim 5, characterized in that: The second transmission assembly further includes a bevel gear three installed on the output shaft of the second drive motor and a bevel gear four installed on the pulley shaft of the fourth synchronous pulley. The bevel gear three and the bevel gear four are meshed for transmission.

10. Towel embroidery machine, characterized in that, The invention comprises an embroidery machine head and an embroidery frame, wherein the embroidery machine head is provided with an embroidery needle driving structure and a dual-drive multi-directional towel embroidery device capable of 360-degree reversal as claimed in any one of claims 1 to 9, wherein the embroidery needle driving structure is provided with an embroidery needle, and the swing needle is perpendicular to the embroidery needle and moves back and forth in a straight line on opposite sides of the embroidery needle.

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